SaheblalBagwan

/* Function to send the Data to LCD. 
   As it is 4bit mode, a byte of data is sent in two 4-bit nibbles */
void Lcd_DataWrite(char dat)
{
    LcdDataBus = (dat & 0xF0);      //Send higher nibble
    LCD_RS = 1;   // Send HIGH pulse on RS pin for selecting data register
    LCD_RW = 0;   // Send LOW pulse on RW pin for Write operation
    LCD_EN = 1;   // Generate a High-to-low pulse on EN pin
    delay(1000);
    LCD_EN = 0;

SaheblalBagwan

/* Function to send the command to LCD. 
   As it is 4bit mode, a byte of data is sent in two 4-bit nibbles */
void Lcd_CmdWrite(char cmd)
{
    LcdDataBus = (cmd & 0xF0);     //Send higher nibble
    LCD_RS = 0;   // Send LOW pulse on RS pin for selecting Command register
    LCD_RW = 0;   // Send LOW pulse on RW pin for Write operation
    LCD_EN = 1;   // Generate a High-to-low pulse on EN pin
    delay(1000);
    LCD_EN = 0;

SaheblalBagwan

/* Configure the data bus and Control bus as per the hardware connection 
   Databus is connected to P2.4:P2.7 and control bus P2.0:P2.2*/
#define LcdDataBus  P2
sbit LCD_RS = P2^0;
sbit LCD_RW = P2^1;
sbit LCD_EN = P2^2;

SaheblalBagwan

/***************************************************************************************************
                                 Struct/Enums used
 ****************************************************************************************************/
/*     Time       S Lat       P Long       P             Date
$GPRMC,110831.000,A,1304.8763,N,07733.6457,E,0.79,303.84,010116,,,A*68
 */
#define TIME_INDEX        7
#define STATUS_INDEX     18
#define LAT_INTEX        20
#define NS_POLE_INTEX    30

SaheblalBagwan

/***************************************************************************************************
                                              ExploreEmbedded Copyright Notice 
 ****************************************************************************************************
 * File:   main.c
 * Version: 16.0
 * Author: ExploreEmbedded
 * Website: http://www.exploreembedded.com/wiki
 * Description: This file contains the sample program to read the GPS data and display it on LCD

This code has been developed and tested on ExploreEmbedded boards.  

SaheblalBagwan

#include<reg51.h>
#define LEDs P0
unsigned char receivedChar=0;
unsigned char count=0;
unsigned char ti_flag=0;

void ext_int_0() interrupt 0
{ 
    count++;
}

SaheblalBagwan

#include<reg51.h>
#define LEDs P0
unsigned char receivedChar=0;

void serial_isr() interrupt 4 
{ 
    if(RI == 1)
    {
        receivedChar = SBUF; // Copy the received char
        SBUF = receivedChar; // echo the character back

SaheblalBagwan

#include<reg51.h>
#define LEDs P0
unsigned char count=0;

void ext_int_0 () interrupt 0 
{ 
    count++;
}
 
void ext_int_1 () interrupt 2 

SaheblalBagwan

#include<reg51.h>
sbit LED1 =  P0^0; // this will be blinking every 50ms
sbit LED2 =  P0^1; // will show switch status(inverted)
sbit SW = P3^2;

void timer0_isr() interrupt 1
{
    TH0  = 0X4B;        //ReLoad the timer value
    TL0  = 0XFD;
    LED1 =!LED1;        // Toggle the LED pin 

SaheblalBagwan

#include "glcd.h"   //User defined LCD library which contains the lcd routines
#include "delay.h"

/* start the main program */
void main() 
{
    /* Initialize the glcd before displaying any thing on the lcd */
    GLCD_Init();

    GLCD_Printf("Interfacing\n\n");